Brian Hudelson, Ann Joy, Joyce Wu, Tom Hinsenkamp, and Catherine Wendt, Plant Disease Diagnostics Clinic
The PDDC receives samples of many plant and soil samples from around the state. The following diseases/disorders have been identified at the PDDC from July 5, 2014 through July 11, 2014.
Plant/Sample Type, Disease/Disorder, Pathogen, County
FIELD CROPS,
Corn, Nitrogen Burn, None, Iowa
Soybean, Seedling Blight, Fusarium spp., Lafayette
FRUIT CROPS,
Apple, Phyllosticta Leaf Spot, Phyllosticta sp., Portage
Apple, Root Rot, Pythium sp., Fusarium spp., Dane, Washington
Apple, Sphaeropsis Canker, Sphaeropsis sp., Portage
Apple, Winter Injury, None, Dane, Portage, Washington, Winnebago
Grape, Black Rot, Phyllosticta ampelicida, Jefferson
Grape, Downy Mildew, Plasmopara viticola, Dane
VEGETABLES,
Asparagus, Alternaria Leaf Spot, Alternaria sp., Waushara
Asparagus, Anthracnose, Colletotrichum sp., Waushara
Asparagus, Phomopsis Canker, Phomopsis sp., Waushara
Asparagus, Root/Crown/Stem Rot, Fusarium oxysporum, Waushara
Asparagus, Rust, Puccinia asparagi-Waushara
Celery, Fusarium Yellows, Fusarium oxysporum, Waushara
Celery, Root Rot, Pythium sp., Waushara
Kohlrabi, Crown Gall, Agrobacterium tumefaciens, Winnebago
Tomato, Black Walnut Toxicity, None, Dane
Tomato, Blossom End Rot, None, Dane
Tomato, Herbicide Damage, None, Columbia
Tomato, Septoria Leaf Spot, Septoria lycopersici, Dane, Racine
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.